Loan-to-Value Ratio: Formula and Calculator

This calculator finds loan-to-value ratio (LTV) by dividing a loan amount by the value of the property or asset securing it, then expressing the result as a percentage. Enter both amounts in the same currency; the result is the share of the asset’s value represented by the loan.

Formula

The formula is: LTV = (loan amount ÷ property or asset value) × 100.

• Loan amount is the amount of debt being measured, in dollars.
• Property or asset value is the value used as the denominator, also in dollars.
• LTV is the resulting ratio, expressed as a percentage.

The second calculator result, value minus loan amount, is a simple dollar difference between the two inputs. It is not necessarily the owner’s full equity: other debts secured by the asset, transaction costs, or differences between the estimate and eventual sale price can affect the amount of equity available.

Worked Example

Using the calculator’s default inputs, the loan is $200,000 and the property value is $250,000.

1. Divide the loan by the value: $200,000 ÷ $250,000 = 0.8.
2. Convert the decimal to a percentage: 0.8 × 100 = 80.00% LTV.
3. For the additional result, subtract: $250,000 − $200,000 = $50,000.

Thus, the debt entered is 80% of the entered property value. The result describes the relationship between those two figures; it does not by itself establish an approval outcome or the terms of a loan.

Assumptions

• The two inputs use the same currency and refer to the same asset or group of assets.
• The loan amount is the debt balance being assessed, rather than automatically the original amount borrowed.
• The property or asset value is supplied by the user; the calculator does not estimate or verify it.
• This is a ratio calculation, not a payment or interest calculation. It does not include fees, taxes, insurance, PMI, escrow, or other costs.

Choosing the Right Amounts

The arithmetic is straightforward, but selecting consistent inputs matters. For a new loan, a reader may be comparing the proposed loan amount with a purchase price or another value specified for that transaction. For an existing loan, the outstanding balance is generally the relevant debt figure for a current LTV calculation, rather than the original amount borrowed. Use the value that matches the purpose of the calculation, and check how a lender or other party defines it when comparing against a stated threshold.

Where more than one loan is secured by the same property, a single-loan LTV may not show the total debt burden. A combined LTV calculation commonly uses the balances of the relevant secured loans together:

Combined LTV = (total relevant secured loan balances ÷ property value) × 100.

For example, if a property is valued at $250,000 and two secured balances are $160,000 and $20,000, the combined ratio is ($180,000 ÷ $250,000) × 100 = 72%. Whether a particular comparison should include additional loans depends on the definition being used, so do not mix a combined debt figure with a single-loan threshold.

How to Interpret LTV

An LTV of 80% means the entered loan is four-fifths of the entered property value. A lower percentage means the loan is a smaller proportion of that value; a higher percentage means it is a larger proportion. The portion of value not represented by the entered loan is sometimes described informally as the down-payment share for a purchase, but that description only fits when the figures and transaction support it.

LTV is not the same as equity, loan-to-cost, or debt-to-income ratio. Equity concerns the value left after relevant debt is accounted for; loan-to-cost compares borrowing with project or purchase costs; debt-to-income compares debt payments with income. Each measure answers a different question. LTV also does not indicate the monthly payment, interest rate, total borrowing cost, or whether a borrower will qualify.

Common Errors and Limits

• Using inconsistent units or currencies: convert both amounts to the same currency before dividing. If one figure is in dollars and the other in thousands of dollars, the result will be wrong by a factor of 1,000.
• Using the wrong debt figure: distinguish an original loan amount from the current payoff or outstanding balance. The appropriate figure depends on whether the calculation concerns a new borrowing or existing debt.
• Assuming an estimated value is exact: the result changes when the property value changes. An appraisal, valuation, sale price, and informal estimate may differ, and this calculator does not decide which is appropriate.
• Rounding too early: divide the full amounts first and round the final percentage. The calculator displays two decimal places; small differences in displayed results can arise from rounding.
• Confusing a high or low result with a decision: LTV alone does not determine loan terms, costs, or approval. Any relevant cutoff or definition must come from the specific lender or document being reviewed.

If the loan is larger than the entered value, the calculator can show an LTV above 100%. That is mathematically valid: it means the entered debt exceeds the entered value. It is not automatically an input error, though it is worth checking that the figures are accurate and comparable.

Frequently Asked Questions

How do you calculate LTV by hand?
Divide the loan balance by the property value, then multiply by 100. For example, $180,000 ÷ $240,000 × 100 = 75%.

What does an 80% loan-to-value ratio mean?
It means the loan amount equals 80% of the property value used in the calculation. It does not, on its own, tell you the loan’s payment, cost, or approval status.

Should I use the purchase price or appraised value?
That depends on the purpose and the definition used by the party requesting the figure. Use the value specified for that comparison; do not assume every calculation uses the same valuation basis.

Can LTV be over 100%?
Yes. If the debt entered is greater than the asset value entered, the result exceeds 100%. Check that the inputs are accurate and that the calculation includes the intended debts.

Is LTV the same as equity?
No. LTV is a percentage: loan divided by value. A basic equity estimate is value minus relevant debt, but other secured balances and costs may affect usable equity.

Does LTV tell me whether a loan will be approved?
No. It is one measure, and this calculator cannot determine a lender’s decision, terms, or requirements. The result is an estimate; the lender’s disclosure gives the exact figures.

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in loan | Loan amount | $ | 200000 | 1 | 100000000
in value | Property or asset value | $ | 250000 | 1 | 100000000
out ltv | Loan-to-value ratio | % | loan / value * 100 | 2
out equity | Value minus loan amount | $ | value - loan | 2